Detachable carrier head



Nov. 29, 1927.

` w. F. MERRILL DETACHBLE CARRIER HEAD manu. JM www Patented Nov. 29, 1927.'

@UNITED e STATES PATENT OFFICE.

WILLIAM F. MERRILL, 0F -SYVRACU'SEJ NEW YORK, .ASSIGNOR TO 'THE LAMSQN OOM PANY, OFfSYRAGU'SE, NEW YORK, ACORPORATION- QF 'MASSACHUSETTS.

n-E'rAcHArLE CARRIER Haan.

Application led February 3, v1926. Serial No. 85,709.

This invention relates lto despatch carriers ,such asy lare commonly used Yin pneumatic despatch systems for carrying change between clerks and cashiers in stores, for conveying cards in libraries, and in'similar installations.

The. carriers ordinarily consist of telescoping tubular shells with bumpers or heads of `felt or the like securedV tol their Vclosed rends. These bumpers or heads have commonly been secured to the tubularv shells by bolts, rivets or similar fastening means, and since. they are subject to continued wear, their ready replacement has been an item of considerable importance in the upkeep of pneumatic despatch systems. The conventional type of fastening means. when used in this location are inaccessible and the removal of the heads from the tubular body portions vor shells of the carriers has therefore been a troublesome operation. The present invention relates'to-improved means provided for quickly attaching or detaching the felt bumpers from the shells of despatch carriers and in vthe specific aspect disclosed in this appplication comprises -means which may be engaged in locking relation by the .rotation of the bumper or head in relation to the shell. Thef engagement thus provided between these parts is preferably of such af nature that a comparatively firm lock is maintained so that lthe bumpers upon the ends ofthe despatch carrier may be usedv as handles for rotating the telescoping body portions of the carrier relativento each other during their use, as is customary, but so that the bumpers may be detached fromv the shells by a firm manual rotation, when desired.

In the accompanying drawings, Fig. 1 is a side elevation of a despatch carrier;

Fig; 2 is a detail section on line 2 2 of Fi .3;

Fig. 3 is a section on line 8-3 of Fig. 1;

Fig. 4 is a similar view showing the parts in a position wherein they may be freely removed from one another;

Fi 5 is va detail section on line 5 5 of Fig. Y

Fig. 6 is a section'on line 6-6 of Fig. 3;

Fig. 7 is a sectional view corresponding to Fig. 3 and showing a modifiedV form of my invention;r and Fig. 8 isa detail elevational view.

The preferred form of my invention comprises a carrier having the telescopingv body portions or shells 1 and. 2 of conventional form with the bumpers or heads 3 of felt or the 4like detachably secured to these portions. .To this end each head comprises a. inetalnplate l and a disc 8 coaxial with but of vsmaller diameter than the plate 4. A substantially rectangular retainer 9 of resilient metal having depending end portions 1-2 is secured upon the disc 8. The various parts of thehead may preferably be secured together by means of bolts or rivets 13, or the like, having their heads engaging `a washer 16 in a central depression 'inthe outer end of the head.

The ends 6 of body portions or shells 1 and '2 of the despatch carrier are formed substantially as shown in Fig. 8, with a central circular opening '7 adapted to receive the disc 8 upon the head and having the eXtensions 11 shaped vto accommodate the ends of the retainer 9. The extensions v1'1 are arranged at diametrically opposedA portions of the opening and provided with bevelled lateral edges 14e, yand intermediate these eX- tensions are the slots 10 whichare adapted to engagev the depending ends '12 of the retainer when the head is in locking or operative position (Figs. 3 and 6'). The ends 12 also have bevelled edges 19y for facilitating the detachment-of the headfand shell.

In securing the head or bumperupon a despatch carrier of the type disclosed, the head is applied to the end of thei carrier with thc retainer 9 registering vwith the eX- tensions 11 of the opening in the end of the body portion ofthe container `(Fig.

The retainer 9 is comparatively resilient and therbevelled surfaces 14 at the lateral edges of the openings 11 help in guiding the depending portions 12 of the retainer up onto the inner surface of the end 6 of the shell.` As the head is rotated the ends of the retainer travel over the inner surface of the` end 6 of the shell until finally its depending inherent resilience. 'This resilience is preferably so gauged in relation to the dimensions and disposition of the parts that normal relative rotation of the telescoping body members 1 and .2 may be imparted thereto through the heads 8, but so that the heads 3 may be detached from members 1 or Y 2 by a firm manual turning of one of these members in relation tothe other, the bevelled ends 12 snap into the slots 10 due to its -Y lll edges oit slots cooperating with the edges ol the retainer to permit such a movement.

Figs. 5 andy T illustrate a inoditied forni of the invention embodying similar principles ot' construction, In this torni ot the inven tion the end 2G of' the tnbnlai.' member l. is provided with an opening; T having extern sions ll similar to those previously described but in place ol the slots l0, npstanding and preferably resilient nubs El() are provided to engage a loelrinp; hey or retainer .29 se cured to a dise ib which has a thickness substantially eorrespondinf.,T to that ot the end 2G. lilith this type ot construction the retainer may merely roinprise a lat plate co operating;r with the resilient nubs lll tor obtaining the locking ell'eet. lt is evident that this device may be arranged to be unlocked in relation to the body portion of the earrier with the application otA a suitable amount ot torce 'in the manner that has been described with reterein-e to the preferred embodiment.

It will now be ohvions lo those skilled in the art that many optional arrangements ot parts are within the run'vieiv ot this invention, for instance either the disc or plate Lt may be omitted, or integral extensions oi such a member may 'torni the retaining means.

I claim: y

IMA despatch carrier l'iavilral a Atubular shell with an opening;` in its end and a de taehable head, extensions oit said head adapt ed to lie in the opening in the end ot the shell and being movable to a locking position by relative rotation et' the shell and thi. head.

Q. A despatch carrier having a tubular shell and a detachable head, resilient projectingiineans upon said head being adapted to be locked in engagement with said shell by rotation ont the head.

3. A despatch carrier having;r a tubular shell with an end having an opening therein, a head, and resilient projecting retainer means tixed upon said head and adapted to mareas be inserted in the opening and then to be moved to a locking position by relative rota tion ot `the head and the shell, l

ft. A despatch carrier having a shell with an opening in the end thereof, a head, an elongate resilient retainer secured upon said head. extensions ol" the opening in the shell beineh shaped to register with `said retainer and ineens intermediate the extensions of the opening adapt-ed resiliently to engage portions ot' the retainer adjacent to its ends to hold the saine in locked position when the head is rotated in relation to the shell from a position wherein the extensions of the openingr and retainer are registered.

A desiiatel'i carrier having' a: shell With openings in the end thereof and a head provided With an elongate resilient retainer haring depending,r end portions, said retainer lfwing tixedly secured to said head, one of the openings in the shell being shaped to register with said retainer, other openings in the end of the shell. beine adapted to engage the depending ends o? said retainer when the head is rotated to move the retainer from its position in registration with the first named opening;` thereby tohold the head in lor-lied relation with said shell.

t3. A despatch carrier comprising a tubu lar body portion with a central opening;` in its end havingr diametrically opposed extensions, a heed having;r a centrally projected portion adapted to register with the central opening in the end of the body portion and an elongate retainer secured upon the central projection and adapted to have its ends received in the extensions ot" the central opening; in the end of the body portion, said head being adapted to be locked to said body portion hy the rotation of the head relative to the body portion from a position wherein the retainer has its ends engaged in the extensions of the central opening in the body portion.

Signed by ine at Syracuse, New York, this Alst day of February, 1926,

VILLIAM F. MERRILL. 

